./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:21:24,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:21:24,174 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 16:21:24,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:21:24,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:21:24,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:21:24,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:21:24,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:21:24,211 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:21:24,211 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:21:24,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:21:24,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:21:24,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:21:24,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:21:24,213 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:21:24,213 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:21:24,213 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:21:24,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:21:24,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:21:24,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:21:24,214 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:21:24,214 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:21:24,214 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:21:24,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:21:24,214 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:21:24,215 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:21:24,215 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:21:24,215 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:21:24,215 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:21:24,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:21:24,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:21:24,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:21:24,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:21:24,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:21:24,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:21:24,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:21:24,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:21:24,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:21:24,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:21:24,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:21:24,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:21:24,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:21:24,218 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-11-13 16:21:24,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:21:24,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:21:24,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:21:24,570 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:21:24,570 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:21:24,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c Unable to find full path for "g++" [2024-11-13 16:21:26,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:21:27,058 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:21:27,059 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-13 16:21:27,070 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/data/61e99de19/092c2d81a06d494e8a2ad735294a0e0f/FLAG193c3e625 [2024-11-13 16:21:27,093 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/data/61e99de19/092c2d81a06d494e8a2ad735294a0e0f [2024-11-13 16:21:27,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:21:27,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:21:27,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:21:27,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:21:27,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:21:27,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f10ce68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27, skipping insertion in model container [2024-11-13 16:21:27,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,142 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:21:27,401 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:21:27,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:21:27,415 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:21:27,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:21:27,464 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:21:27,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27 WrapperNode [2024-11-13 16:21:27,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:21:27,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:21:27,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:21:27,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:21:27,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,531 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 158 [2024-11-13 16:21:27,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:21:27,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:21:27,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:21:27,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:21:27,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,578 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 16:21:27,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:21:27,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:21:27,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:21:27,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:21:27,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (1/1) ... [2024-11-13 16:21:27,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:21:27,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:27,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:21:27,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:21:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:21:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 16:21:27,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 16:21:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 16:21:27,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 16:21:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:21:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:21:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:21:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:21:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 16:21:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 16:21:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:21:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:21:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:21:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:21:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:21:27,690 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 16:21:27,845 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:21:27,847 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:21:28,392 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 16:21:28,392 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:21:28,829 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:21:28,829 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 16:21:28,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:21:28 BoogieIcfgContainer [2024-11-13 16:21:28,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:21:28,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:21:28,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:21:28,839 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:21:28,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:21:27" (1/3) ... [2024-11-13 16:21:28,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29379a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:21:28, skipping insertion in model container [2024-11-13 16:21:28,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:21:27" (2/3) ... [2024-11-13 16:21:28,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29379a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:21:28, skipping insertion in model container [2024-11-13 16:21:28,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:21:28" (3/3) ... [2024-11-13 16:21:28,844 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-11-13 16:21:28,865 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:21:28,867 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-2-nl.wvr.c that has 3 procedures, 37 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2024-11-13 16:21:28,867 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 16:21:28,971 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 16:21:29,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-11-13 16:21:29,080 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-13 16:21:29,085 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 16:21:29,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 79 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-13 16:21:29,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-11-13 16:21:29,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 86 flow [2024-11-13 16:21:29,111 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:21:29,134 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14c4fc18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:21:29,134 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-13 16:21:29,142 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 16:21:29,143 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-13 16:21:29,144 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:21:29,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:29,145 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 16:21:29,145 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:29,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:29,152 INFO L85 PathProgramCache]: Analyzing trace with hash 512681, now seen corresponding path program 1 times [2024-11-13 16:21:29,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:29,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015701923] [2024-11-13 16:21:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:29,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:29,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:29,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015701923] [2024-11-13 16:21:29,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015701923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:29,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:29,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 16:21:29,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515012312] [2024-11-13 16:21:29,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:29,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:21:29,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:29,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:21:29,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:21:29,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:29,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:29,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:29,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:29,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:29,962 INFO L124 PetriNetUnfolderBase]: 238/451 cut-off events. [2024-11-13 16:21:29,962 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-13 16:21:29,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 451 events. 238/451 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2012 event pairs, 201 based on Foata normal form. 22/343 useless extension candidates. Maximal degree in co-relation 819. Up to 388 conditions per place. [2024-11-13 16:21:29,976 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 25 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-13 16:21:29,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 132 flow [2024-11-13 16:21:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:21:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:21:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-13 16:21:29,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-13 16:21:29,998 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 3 states and 57 transitions. [2024-11-13 16:21:30,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 132 flow [2024-11-13 16:21:30,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 16:21:30,013 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2024-11-13 16:21:30,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-13 16:21:30,023 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-11-13 16:21:30,024 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2024-11-13 16:21:30,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:30,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:30,024 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 16:21:30,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:21:30,025 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:30,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash 512682, now seen corresponding path program 1 times [2024-11-13 16:21:30,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:30,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636792142] [2024-11-13 16:21:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:30,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:30,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:30,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636792142] [2024-11-13 16:21:30,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636792142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:30,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:30,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:21:30,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852577812] [2024-11-13 16:21:30,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:30,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:21:30,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:21:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:21:30,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:30,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:30,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:30,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:30,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:30,884 INFO L124 PetriNetUnfolderBase]: 239/454 cut-off events. [2024-11-13 16:21:30,884 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 16:21:30,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 454 events. 239/454 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2021 event pairs, 201 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 843. Up to 393 conditions per place. [2024-11-13 16:21:30,896 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-11-13 16:21:30,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 144 flow [2024-11-13 16:21:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:21:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:21:30,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-13 16:21:30,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-13 16:21:30,899 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 4 states and 68 transitions. [2024-11-13 16:21:30,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 144 flow [2024-11-13 16:21:30,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:21:30,903 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 97 flow [2024-11-13 16:21:30,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-11-13 16:21:30,905 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-13 16:21:30,905 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 97 flow [2024-11-13 16:21:30,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:30,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:30,906 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-13 16:21:30,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:21:30,907 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:30,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash 492703247, now seen corresponding path program 1 times [2024-11-13 16:21:30,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:30,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447048079] [2024-11-13 16:21:30,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:30,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:31,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:31,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447048079] [2024-11-13 16:21:31,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447048079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:31,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652623637] [2024-11-13 16:21:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:31,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:31,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:31,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:31,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:21:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:31,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:21:31,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:31,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 16:21:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:31,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:32,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652623637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:32,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:32,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-13 16:21:32,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331361869] [2024-11-13 16:21:32,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:32,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:21:32,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:32,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:21:32,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:21:32,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:32,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 97 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:32,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:32,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:32,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:32,727 INFO L124 PetriNetUnfolderBase]: 240/456 cut-off events. [2024-11-13 16:21:32,727 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 16:21:32,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 456 events. 240/456 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2040 event pairs, 201 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 850. Up to 390 conditions per place. [2024-11-13 16:21:32,732 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 23 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2024-11-13 16:21:32,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 171 flow [2024-11-13 16:21:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:21:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 16:21:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-11-13 16:21:32,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-11-13 16:21:32,735 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 97 flow. Second operand 8 states and 107 transitions. [2024-11-13 16:21:32,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 171 flow [2024-11-13 16:21:32,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:21:32,738 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 122 flow [2024-11-13 16:21:32,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-13 16:21:32,739 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-11-13 16:21:32,739 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 122 flow [2024-11-13 16:21:32,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:32,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:32,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 16:21:32,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:21:32,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:32,944 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:32,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:32,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1903839786, now seen corresponding path program 1 times [2024-11-13 16:21:32,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:32,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378253836] [2024-11-13 16:21:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:32,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:33,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:33,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378253836] [2024-11-13 16:21:33,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378253836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:33,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:33,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:21:33,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185643977] [2024-11-13 16:21:33,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:33,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:21:33,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:21:33,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:21:33,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:33,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:33,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:33,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:33,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:33,263 INFO L124 PetriNetUnfolderBase]: 169/328 cut-off events. [2024-11-13 16:21:33,264 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 16:21:33,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 328 events. 169/328 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1292 event pairs, 136 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 605. Up to 273 conditions per place. [2024-11-13 16:21:33,267 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 26 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-11-13 16:21:33,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 176 flow [2024-11-13 16:21:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:21:33,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:21:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-13 16:21:33,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-11-13 16:21:33,269 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 122 flow. Second operand 4 states and 63 transitions. [2024-11-13 16:21:33,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 176 flow [2024-11-13 16:21:33,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 134 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-13 16:21:33,272 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 82 flow [2024-11-13 16:21:33,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-11-13 16:21:33,273 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-13 16:21:33,273 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 82 flow [2024-11-13 16:21:33,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:33,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:33,274 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 16:21:33,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:21:33,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:33,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:33,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1903839785, now seen corresponding path program 1 times [2024-11-13 16:21:33,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:33,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675465922] [2024-11-13 16:21:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:33,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:33,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:33,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675465922] [2024-11-13 16:21:33,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675465922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:33,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:33,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:21:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570587951] [2024-11-13 16:21:33,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:33,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:21:33,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:21:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:21:33,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-13 16:21:33,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:33,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:33,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-13 16:21:33,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:33,577 INFO L124 PetriNetUnfolderBase]: 181/366 cut-off events. [2024-11-13 16:21:33,577 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 16:21:33,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 366 events. 181/366 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1471 event pairs, 149 based on Foata normal form. 17/322 useless extension candidates. Maximal degree in co-relation 597. Up to 278 conditions per place. [2024-11-13 16:21:33,580 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 27 selfloop transitions, 2 changer transitions 8/42 dead transitions. [2024-11-13 16:21:33,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 172 flow [2024-11-13 16:21:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:21:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:21:33,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-13 16:21:33,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-13 16:21:33,582 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 4 states and 80 transitions. [2024-11-13 16:21:33,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 172 flow [2024-11-13 16:21:33,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:21:33,584 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 90 flow [2024-11-13 16:21:33,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-13 16:21:33,585 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-13 16:21:33,586 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 90 flow [2024-11-13 16:21:33,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:33,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:33,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:33,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:21:33,586 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:33,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2073066414, now seen corresponding path program 1 times [2024-11-13 16:21:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:33,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357324651] [2024-11-13 16:21:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:33,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:33,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:33,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357324651] [2024-11-13 16:21:33,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357324651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:33,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783099157] [2024-11-13 16:21:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:33,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:33,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:33,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:33,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:21:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:34,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:21:34,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:34,165 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:21:34,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783099157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:34,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:21:34,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-13 16:21:34,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397682936] [2024-11-13 16:21:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:34,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:21:34,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:34,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:21:34,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:21:34,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-13 16:21:34,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:34,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:34,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-13 16:21:34,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:34,300 INFO L124 PetriNetUnfolderBase]: 109/219 cut-off events. [2024-11-13 16:21:34,301 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-13 16:21:34,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 219 events. 109/219 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 700 event pairs, 83 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 442. Up to 176 conditions per place. [2024-11-13 16:21:34,304 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 23 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-13 16:21:34,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 130 flow [2024-11-13 16:21:34,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:21:34,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:21:34,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-13 16:21:34,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-13 16:21:34,309 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 90 flow. Second operand 4 states and 64 transitions. [2024-11-13 16:21:34,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 130 flow [2024-11-13 16:21:34,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:21:34,311 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 80 flow [2024-11-13 16:21:34,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-11-13 16:21:34,312 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-11-13 16:21:34,314 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 80 flow [2024-11-13 16:21:34,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:34,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:34,315 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:34,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:21:34,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:34,516 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:34,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1463955559, now seen corresponding path program 1 times [2024-11-13 16:21:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:34,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68315445] [2024-11-13 16:21:34,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:34,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:35,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:35,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68315445] [2024-11-13 16:21:35,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68315445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:35,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:35,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:21:35,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644018805] [2024-11-13 16:21:35,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:35,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:21:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:35,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:21:35,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:21:35,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:35,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 80 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:35,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:35,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:35,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:35,908 INFO L124 PetriNetUnfolderBase]: 206/396 cut-off events. [2024-11-13 16:21:35,909 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-13 16:21:35,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 396 events. 206/396 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1630 event pairs, 5 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 822. Up to 227 conditions per place. [2024-11-13 16:21:35,912 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 48 selfloop transitions, 15 changer transitions 5/72 dead transitions. [2024-11-13 16:21:35,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 323 flow [2024-11-13 16:21:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:21:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:21:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-11-13 16:21:35,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-11-13 16:21:35,915 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 80 flow. Second operand 10 states and 154 transitions. [2024-11-13 16:21:35,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 323 flow [2024-11-13 16:21:35,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 72 transitions, 319 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:21:35,918 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 164 flow [2024-11-13 16:21:35,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=164, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-13 16:21:35,919 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-11-13 16:21:35,919 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 164 flow [2024-11-13 16:21:35,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:35,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:35,920 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:35,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:21:35,920 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:35,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:35,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1106366555, now seen corresponding path program 2 times [2024-11-13 16:21:35,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:35,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121001741] [2024-11-13 16:21:35,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:35,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:36,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:36,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121001741] [2024-11-13 16:21:36,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121001741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:36,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:36,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:21:36,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535387106] [2024-11-13 16:21:36,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:36,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:21:36,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:36,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:21:36,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:21:36,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-13 16:21:36,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:36,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:36,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-13 16:21:36,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:36,157 INFO L124 PetriNetUnfolderBase]: 152/307 cut-off events. [2024-11-13 16:21:36,157 INFO L125 PetriNetUnfolderBase]: For 172/176 co-relation queries the response was YES. [2024-11-13 16:21:36,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 307 events. 152/307 cut-off events. For 172/176 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1139 event pairs, 33 based on Foata normal form. 6/312 useless extension candidates. Maximal degree in co-relation 829. Up to 224 conditions per place. [2024-11-13 16:21:36,161 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 40 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-13 16:21:36,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 265 flow [2024-11-13 16:21:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:21:36,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:21:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-13 16:21:36,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-13 16:21:36,162 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 164 flow. Second operand 3 states and 59 transitions. [2024-11-13 16:21:36,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 265 flow [2024-11-13 16:21:36,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 252 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-13 16:21:36,166 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 165 flow [2024-11-13 16:21:36,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-13 16:21:36,167 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2024-11-13 16:21:36,168 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 165 flow [2024-11-13 16:21:36,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:36,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:36,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:36,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:21:36,168 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:36,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:36,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2028330583, now seen corresponding path program 3 times [2024-11-13 16:21:36,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:36,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450798295] [2024-11-13 16:21:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:36,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:36,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:36,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450798295] [2024-11-13 16:21:36,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450798295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:36,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:36,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:21:36,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690992280] [2024-11-13 16:21:36,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:36,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:21:36,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:36,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:21:36,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:21:37,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:37,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 165 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:37,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:37,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:37,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:37,413 INFO L124 PetriNetUnfolderBase]: 194/393 cut-off events. [2024-11-13 16:21:37,413 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2024-11-13 16:21:37,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159 conditions, 393 events. 194/393 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1639 event pairs, 25 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1127. Up to 226 conditions per place. [2024-11-13 16:21:37,417 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 48 selfloop transitions, 19 changer transitions 5/76 dead transitions. [2024-11-13 16:21:37,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 76 transitions, 451 flow [2024-11-13 16:21:37,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:21:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:21:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-11-13 16:21:37,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-11-13 16:21:37,419 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 165 flow. Second operand 10 states and 153 transitions. [2024-11-13 16:21:37,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 76 transitions, 451 flow [2024-11-13 16:21:37,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 420 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-13 16:21:37,428 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 249 flow [2024-11-13 16:21:37,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-11-13 16:21:37,430 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-11-13 16:21:37,432 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 249 flow [2024-11-13 16:21:37,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:37,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:37,433 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:37,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 16:21:37,433 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:37,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:37,433 INFO L85 PathProgramCache]: Analyzing trace with hash -929473031, now seen corresponding path program 4 times [2024-11-13 16:21:37,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:37,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744647656] [2024-11-13 16:21:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:38,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:38,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744647656] [2024-11-13 16:21:38,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744647656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:38,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:38,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:21:38,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650399945] [2024-11-13 16:21:38,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:38,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:21:38,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:38,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:21:38,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:21:38,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:38,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 249 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:38,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:38,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:38,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:38,515 INFO L124 PetriNetUnfolderBase]: 200/414 cut-off events. [2024-11-13 16:21:38,515 INFO L125 PetriNetUnfolderBase]: For 454/454 co-relation queries the response was YES. [2024-11-13 16:21:38,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 414 events. 200/414 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1786 event pairs, 25 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1269. Up to 241 conditions per place. [2024-11-13 16:21:38,519 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 50 selfloop transitions, 22 changer transitions 5/81 dead transitions. [2024-11-13 16:21:38,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 541 flow [2024-11-13 16:21:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:21:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:21:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-11-13 16:21:38,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-11-13 16:21:38,521 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 249 flow. Second operand 10 states and 154 transitions. [2024-11-13 16:21:38,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 541 flow [2024-11-13 16:21:38,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 505 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-13 16:21:38,533 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 347 flow [2024-11-13 16:21:38,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=347, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-11-13 16:21:38,535 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2024-11-13 16:21:38,537 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 347 flow [2024-11-13 16:21:38,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:38,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:38,538 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:38,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 16:21:38,538 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:38,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1239135467, now seen corresponding path program 5 times [2024-11-13 16:21:38,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:38,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807718601] [2024-11-13 16:21:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:38,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:39,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:39,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807718601] [2024-11-13 16:21:39,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807718601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:39,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:39,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:21:39,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239172553] [2024-11-13 16:21:39,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:39,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:21:39,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:39,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:21:39,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:21:39,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:39,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 347 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:39,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:39,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:39,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:39,713 INFO L124 PetriNetUnfolderBase]: 205/442 cut-off events. [2024-11-13 16:21:39,714 INFO L125 PetriNetUnfolderBase]: For 848/848 co-relation queries the response was YES. [2024-11-13 16:21:39,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1513 conditions, 442 events. 205/442 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2036 event pairs, 15 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 1492. Up to 218 conditions per place. [2024-11-13 16:21:39,719 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 53 selfloop transitions, 28 changer transitions 5/90 dead transitions. [2024-11-13 16:21:39,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 660 flow [2024-11-13 16:21:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:21:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 16:21:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-11-13 16:21:39,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2024-11-13 16:21:39,721 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 347 flow. Second operand 11 states and 167 transitions. [2024-11-13 16:21:39,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 660 flow [2024-11-13 16:21:39,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 632 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-13 16:21:39,728 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 425 flow [2024-11-13 16:21:39,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=425, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2024-11-13 16:21:39,730 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-11-13 16:21:39,730 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 425 flow [2024-11-13 16:21:39,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:39,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:39,731 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:39,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 16:21:39,731 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:39,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:39,731 INFO L85 PathProgramCache]: Analyzing trace with hash 893779749, now seen corresponding path program 6 times [2024-11-13 16:21:39,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:39,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367879502] [2024-11-13 16:21:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:39,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:40,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:40,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367879502] [2024-11-13 16:21:40,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367879502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:40,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:40,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:21:40,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889723117] [2024-11-13 16:21:40,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:40,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:21:40,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:40,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:21:40,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:21:40,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:40,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 425 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:40,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:40,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:40,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:40,804 INFO L124 PetriNetUnfolderBase]: 217/475 cut-off events. [2024-11-13 16:21:40,804 INFO L125 PetriNetUnfolderBase]: For 1480/1480 co-relation queries the response was YES. [2024-11-13 16:21:40,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 475 events. 217/475 cut-off events. For 1480/1480 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2255 event pairs, 22 based on Foata normal form. 1/476 useless extension candidates. Maximal degree in co-relation 1707. Up to 282 conditions per place. [2024-11-13 16:21:40,809 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 58 selfloop transitions, 24 changer transitions 5/91 dead transitions. [2024-11-13 16:21:40,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 91 transitions, 738 flow [2024-11-13 16:21:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:21:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:21:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-11-13 16:21:40,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-11-13 16:21:40,812 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 425 flow. Second operand 10 states and 155 transitions. [2024-11-13 16:21:40,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 91 transitions, 738 flow [2024-11-13 16:21:40,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 91 transitions, 658 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-11-13 16:21:40,821 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 448 flow [2024-11-13 16:21:40,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=448, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2024-11-13 16:21:40,823 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 40 predicate places. [2024-11-13 16:21:40,823 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 448 flow [2024-11-13 16:21:40,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:40,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:40,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:40,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 16:21:40,824 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:40,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:40,824 INFO L85 PathProgramCache]: Analyzing trace with hash 220505497, now seen corresponding path program 7 times [2024-11-13 16:21:40,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:40,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743847328] [2024-11-13 16:21:40,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:40,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:41,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:41,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743847328] [2024-11-13 16:21:41,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743847328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:41,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:41,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:21:41,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296125488] [2024-11-13 16:21:41,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:41,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:21:41,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:41,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:21:41,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:21:41,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:41,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 448 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:41,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:41,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:41,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:41,772 INFO L124 PetriNetUnfolderBase]: 213/462 cut-off events. [2024-11-13 16:21:41,773 INFO L125 PetriNetUnfolderBase]: For 1643/1651 co-relation queries the response was YES. [2024-11-13 16:21:41,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743 conditions, 462 events. 213/462 cut-off events. For 1643/1651 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2173 event pairs, 22 based on Foata normal form. 9/471 useless extension candidates. Maximal degree in co-relation 1717. Up to 286 conditions per place. [2024-11-13 16:21:41,778 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 52 selfloop transitions, 23 changer transitions 8/87 dead transitions. [2024-11-13 16:21:41,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 717 flow [2024-11-13 16:21:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:21:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:21:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-11-13 16:21:41,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-13 16:21:41,781 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 448 flow. Second operand 10 states and 150 transitions. [2024-11-13 16:21:41,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 717 flow [2024-11-13 16:21:41,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 658 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-13 16:21:41,796 INFO L231 Difference]: Finished difference. Result has 83 places, 64 transitions, 444 flow [2024-11-13 16:21:41,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=444, PETRI_PLACES=83, PETRI_TRANSITIONS=64} [2024-11-13 16:21:41,797 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 43 predicate places. [2024-11-13 16:21:41,798 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 64 transitions, 444 flow [2024-11-13 16:21:41,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:41,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:41,799 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:41,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 16:21:41,800 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:41,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:41,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1259223067, now seen corresponding path program 8 times [2024-11-13 16:21:41,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:41,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636652170] [2024-11-13 16:21:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:41,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:42,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:42,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636652170] [2024-11-13 16:21:42,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636652170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:42,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:42,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:21:42,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424404865] [2024-11-13 16:21:42,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:42,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:21:42,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:42,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:21:42,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:21:42,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:42,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 64 transitions, 444 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:42,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:42,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:42,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:42,959 INFO L124 PetriNetUnfolderBase]: 222/489 cut-off events. [2024-11-13 16:21:42,960 INFO L125 PetriNetUnfolderBase]: For 1805/1817 co-relation queries the response was YES. [2024-11-13 16:21:42,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1841 conditions, 489 events. 222/489 cut-off events. For 1805/1817 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2363 event pairs, 33 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 1810. Up to 292 conditions per place. [2024-11-13 16:21:42,966 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 61 selfloop transitions, 24 changer transitions 5/94 dead transitions. [2024-11-13 16:21:42,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 94 transitions, 792 flow [2024-11-13 16:21:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:21:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:21:42,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-11-13 16:21:42,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3925 [2024-11-13 16:21:42,968 INFO L175 Difference]: Start difference. First operand has 83 places, 64 transitions, 444 flow. Second operand 10 states and 157 transitions. [2024-11-13 16:21:42,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 94 transitions, 792 flow [2024-11-13 16:21:42,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 736 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-13 16:21:42,979 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 487 flow [2024-11-13 16:21:42,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=487, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2024-11-13 16:21:42,980 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 45 predicate places. [2024-11-13 16:21:42,980 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 487 flow [2024-11-13 16:21:42,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:42,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:42,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:42,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 16:21:42,981 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:42,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:42,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2098731099, now seen corresponding path program 9 times [2024-11-13 16:21:42,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:42,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671572013] [2024-11-13 16:21:42,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:42,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:43,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:43,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:43,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671572013] [2024-11-13 16:21:43,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671572013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:43,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:43,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:21:43,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104841021] [2024-11-13 16:21:43,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:43,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:21:43,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:43,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:21:43,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:21:43,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:43,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 487 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:43,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:43,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:43,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:43,873 INFO L124 PetriNetUnfolderBase]: 218/476 cut-off events. [2024-11-13 16:21:43,873 INFO L125 PetriNetUnfolderBase]: For 2385/2405 co-relation queries the response was YES. [2024-11-13 16:21:43,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 476 events. 218/476 cut-off events. For 2385/2405 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2275 event pairs, 33 based on Foata normal form. 11/487 useless extension candidates. Maximal degree in co-relation 1878. Up to 296 conditions per place. [2024-11-13 16:21:43,878 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 55 selfloop transitions, 23 changer transitions 8/90 dead transitions. [2024-11-13 16:21:43,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 90 transitions, 797 flow [2024-11-13 16:21:43,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:21:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:21:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-11-13 16:21:43,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-11-13 16:21:43,882 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 487 flow. Second operand 10 states and 152 transitions. [2024-11-13 16:21:43,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 90 transitions, 797 flow [2024-11-13 16:21:43,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 90 transitions, 728 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-13 16:21:43,896 INFO L231 Difference]: Finished difference. Result has 88 places, 67 transitions, 475 flow [2024-11-13 16:21:43,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=475, PETRI_PLACES=88, PETRI_TRANSITIONS=67} [2024-11-13 16:21:43,899 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-11-13 16:21:43,899 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 67 transitions, 475 flow [2024-11-13 16:21:43,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:43,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:43,899 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:43,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 16:21:43,899 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:43,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash -99141509, now seen corresponding path program 10 times [2024-11-13 16:21:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:43,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098127227] [2024-11-13 16:21:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:43,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:44,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:44,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098127227] [2024-11-13 16:21:44,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098127227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:44,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:44,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:21:44,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568635420] [2024-11-13 16:21:44,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:44,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:21:44,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:44,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:21:44,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:21:44,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:44,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 67 transitions, 475 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:44,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:44,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:44,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:44,884 INFO L124 PetriNetUnfolderBase]: 230/504 cut-off events. [2024-11-13 16:21:44,884 INFO L125 PetriNetUnfolderBase]: For 2646/2670 co-relation queries the response was YES. [2024-11-13 16:21:44,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 504 events. 230/504 cut-off events. For 2646/2670 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2403 event pairs, 39 based on Foata normal form. 5/508 useless extension candidates. Maximal degree in co-relation 1980. Up to 302 conditions per place. [2024-11-13 16:21:44,890 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 64 selfloop transitions, 23 changer transitions 5/96 dead transitions. [2024-11-13 16:21:44,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 96 transitions, 846 flow [2024-11-13 16:21:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:21:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:21:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-11-13 16:21:44,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-11-13 16:21:44,893 INFO L175 Difference]: Start difference. First operand has 88 places, 67 transitions, 475 flow. Second operand 10 states and 158 transitions. [2024-11-13 16:21:44,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 96 transitions, 846 flow [2024-11-13 16:21:44,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 96 transitions, 788 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-13 16:21:44,907 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 524 flow [2024-11-13 16:21:44,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=524, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2024-11-13 16:21:44,908 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 50 predicate places. [2024-11-13 16:21:44,908 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 524 flow [2024-11-13 16:21:44,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:44,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:44,908 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:44,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 16:21:44,909 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:44,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:44,909 INFO L85 PathProgramCache]: Analyzing trace with hash -938649541, now seen corresponding path program 11 times [2024-11-13 16:21:44,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:44,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719233883] [2024-11-13 16:21:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:44,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:45,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:45,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719233883] [2024-11-13 16:21:45,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719233883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:45,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:45,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 16:21:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033968238] [2024-11-13 16:21:45,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:45,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:21:45,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:45,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:21:45,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:21:45,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-13 16:21:45,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 524 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:45,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:45,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-13 16:21:45,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:45,722 INFO L124 PetriNetUnfolderBase]: 226/491 cut-off events. [2024-11-13 16:21:45,722 INFO L125 PetriNetUnfolderBase]: For 3418/3456 co-relation queries the response was YES. [2024-11-13 16:21:45,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2068 conditions, 491 events. 226/491 cut-off events. For 3418/3456 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2325 event pairs, 39 based on Foata normal form. 13/503 useless extension candidates. Maximal degree in co-relation 2036. Up to 306 conditions per place. [2024-11-13 16:21:45,729 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 58 selfloop transitions, 22 changer transitions 8/92 dead transitions. [2024-11-13 16:21:45,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 841 flow [2024-11-13 16:21:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:21:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 16:21:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-11-13 16:21:45,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-11-13 16:21:45,731 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 524 flow. Second operand 10 states and 153 transitions. [2024-11-13 16:21:45,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 841 flow [2024-11-13 16:21:45,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 764 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-11-13 16:21:45,746 INFO L231 Difference]: Finished difference. Result has 93 places, 70 transitions, 504 flow [2024-11-13 16:21:45,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=504, PETRI_PLACES=93, PETRI_TRANSITIONS=70} [2024-11-13 16:21:45,747 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 53 predicate places. [2024-11-13 16:21:45,747 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 70 transitions, 504 flow [2024-11-13 16:21:45,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:45,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:45,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:45,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 16:21:45,748 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:45,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:45,749 INFO L85 PathProgramCache]: Analyzing trace with hash 38568223, now seen corresponding path program 1 times [2024-11-13 16:21:45,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:45,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191724058] [2024-11-13 16:21:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:45,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:45,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:45,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191724058] [2024-11-13 16:21:45,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191724058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:45,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472445962] [2024-11-13 16:21:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:45,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:45,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:45,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:45,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:21:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:46,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:21:46,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:46,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:46,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472445962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:46,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:46,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-13 16:21:46,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285114572] [2024-11-13 16:21:46,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:46,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 16:21:46,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:46,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 16:21:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:21:46,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-13 16:21:46,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 70 transitions, 504 flow. Second operand has 14 states, 14 states have (on average 13.428571428571429) internal successors, (188), 14 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:46,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:46,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-13 16:21:46,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:46,935 INFO L124 PetriNetUnfolderBase]: 359/861 cut-off events. [2024-11-13 16:21:46,935 INFO L125 PetriNetUnfolderBase]: For 6570/6620 co-relation queries the response was YES. [2024-11-13 16:21:46,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 861 events. 359/861 cut-off events. For 6570/6620 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5111 event pairs, 148 based on Foata normal form. 38/898 useless extension candidates. Maximal degree in co-relation 3598. Up to 369 conditions per place. [2024-11-13 16:21:46,944 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 112 selfloop transitions, 8 changer transitions 13/138 dead transitions. [2024-11-13 16:21:46,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 138 transitions, 1318 flow [2024-11-13 16:21:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:21:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 16:21:46,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-11-13 16:21:46,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-13 16:21:46,947 INFO L175 Difference]: Start difference. First operand has 93 places, 70 transitions, 504 flow. Second operand 8 states and 138 transitions. [2024-11-13 16:21:46,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 138 transitions, 1318 flow [2024-11-13 16:21:46,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 138 transitions, 1198 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-13 16:21:46,971 INFO L231 Difference]: Finished difference. Result has 93 places, 72 transitions, 509 flow [2024-11-13 16:21:46,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=509, PETRI_PLACES=93, PETRI_TRANSITIONS=72} [2024-11-13 16:21:46,973 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 53 predicate places. [2024-11-13 16:21:46,973 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 72 transitions, 509 flow [2024-11-13 16:21:46,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.428571428571429) internal successors, (188), 14 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:46,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:46,973 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:46,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:21:47,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 16:21:47,174 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:47,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:47,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1433302045, now seen corresponding path program 1 times [2024-11-13 16:21:47,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:47,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261284989] [2024-11-13 16:21:47,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:47,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 16:21:47,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261284989] [2024-11-13 16:21:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261284989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:21:47,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:21:47,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:21:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350221891] [2024-11-13 16:21:47,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:21:47,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:21:47,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:21:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:21:47,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-13 16:21:47,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 72 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:47,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:47,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-13 16:21:47,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:47,501 INFO L124 PetriNetUnfolderBase]: 341/863 cut-off events. [2024-11-13 16:21:47,501 INFO L125 PetriNetUnfolderBase]: For 7940/8052 co-relation queries the response was YES. [2024-11-13 16:21:47,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3672 conditions, 863 events. 341/863 cut-off events. For 7940/8052 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5150 event pairs, 98 based on Foata normal form. 83/945 useless extension candidates. Maximal degree in co-relation 3591. Up to 322 conditions per place. [2024-11-13 16:21:47,510 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 58 selfloop transitions, 7 changer transitions 27/97 dead transitions. [2024-11-13 16:21:47,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 866 flow [2024-11-13 16:21:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:21:47,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:21:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-13 16:21:47,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-11-13 16:21:47,512 INFO L175 Difference]: Start difference. First operand has 93 places, 72 transitions, 509 flow. Second operand 4 states and 91 transitions. [2024-11-13 16:21:47,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 866 flow [2024-11-13 16:21:47,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 97 transitions, 821 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-13 16:21:47,536 INFO L231 Difference]: Finished difference. Result has 92 places, 44 transitions, 308 flow [2024-11-13 16:21:47,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=92, PETRI_TRANSITIONS=44} [2024-11-13 16:21:47,537 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-11-13 16:21:47,537 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 44 transitions, 308 flow [2024-11-13 16:21:47,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:47,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:47,538 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:47,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 16:21:47,538 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:47,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:47,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1056106044, now seen corresponding path program 2 times [2024-11-13 16:21:47,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:47,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679124024] [2024-11-13 16:21:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:47,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679124024] [2024-11-13 16:21:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679124024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856863536] [2024-11-13 16:21:48,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:21:48,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:48,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:48,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:48,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:21:48,238 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:21:48,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:48,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 16:21:48,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:48,700 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 16:21:48,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-13 16:21:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:48,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:48,969 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 16:21:48,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-13 16:21:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:49,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856863536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:49,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:49,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-13 16:21:49,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031180694] [2024-11-13 16:21:49,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:49,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:21:49,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:49,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:21:49,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:21:49,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-13 16:21:49,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 44 transitions, 308 flow. Second operand has 22 states, 22 states have (on average 10.863636363636363) internal successors, (239), 22 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:49,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:49,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-13 16:21:49,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:51,787 INFO L124 PetriNetUnfolderBase]: 945/1809 cut-off events. [2024-11-13 16:21:51,787 INFO L125 PetriNetUnfolderBase]: For 19241/19241 co-relation queries the response was YES. [2024-11-13 16:21:51,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8256 conditions, 1809 events. 945/1809 cut-off events. For 19241/19241 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10058 event pairs, 160 based on Foata normal form. 39/1847 useless extension candidates. Maximal degree in co-relation 8033. Up to 396 conditions per place. [2024-11-13 16:21:51,810 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 156 selfloop transitions, 42 changer transitions 0/201 dead transitions. [2024-11-13 16:21:51,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 201 transitions, 1932 flow [2024-11-13 16:21:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 16:21:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-13 16:21:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 307 transitions. [2024-11-13 16:21:51,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4263888888888889 [2024-11-13 16:21:51,813 INFO L175 Difference]: Start difference. First operand has 92 places, 44 transitions, 308 flow. Second operand 18 states and 307 transitions. [2024-11-13 16:21:51,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 201 transitions, 1932 flow [2024-11-13 16:21:51,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 201 transitions, 1372 flow, removed 273 selfloop flow, removed 19 redundant places. [2024-11-13 16:21:51,842 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 657 flow [2024-11-13 16:21:51,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=657, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-11-13 16:21:51,843 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 39 predicate places. [2024-11-13 16:21:51,843 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 657 flow [2024-11-13 16:21:51,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.863636363636363) internal successors, (239), 22 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:51,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:51,843 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:51,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 16:21:52,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:52,048 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:52,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:52,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2013429788, now seen corresponding path program 3 times [2024-11-13 16:21:52,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:52,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311243137] [2024-11-13 16:21:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:52,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:52,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:52,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311243137] [2024-11-13 16:21:52,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311243137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:52,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602253154] [2024-11-13 16:21:52,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:21:52,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:52,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:52,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:52,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:21:52,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 16:21:52,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:52,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 16:21:52,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:21:52,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:52,819 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 16:21:52,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-13 16:21:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:21:52,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602253154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:52,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:52,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 13 [2024-11-13 16:21:52,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796344519] [2024-11-13 16:21:52,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:52,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 16:21:52,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:52,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 16:21:52,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:21:52,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-13 16:21:52,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 657 flow. Second operand has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:52,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:21:52,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-13 16:21:52,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:21:53,699 INFO L124 PetriNetUnfolderBase]: 1314/2523 cut-off events. [2024-11-13 16:21:53,699 INFO L125 PetriNetUnfolderBase]: For 10688/10688 co-relation queries the response was YES. [2024-11-13 16:21:53,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 2523 events. 1314/2523 cut-off events. For 10688/10688 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 14532 event pairs, 257 based on Foata normal form. 56/2578 useless extension candidates. Maximal degree in co-relation 7850. Up to 1031 conditions per place. [2024-11-13 16:21:53,723 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 131 selfloop transitions, 34 changer transitions 0/168 dead transitions. [2024-11-13 16:21:53,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 168 transitions, 1645 flow [2024-11-13 16:21:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:21:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 16:21:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-11-13 16:21:53,726 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2024-11-13 16:21:53,726 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 657 flow. Second operand 11 states and 167 transitions. [2024-11-13 16:21:53,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 168 transitions, 1645 flow [2024-11-13 16:21:53,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 168 transitions, 1507 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-11-13 16:21:53,758 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 797 flow [2024-11-13 16:21:53,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=797, PETRI_PLACES=87, PETRI_TRANSITIONS=95} [2024-11-13 16:21:53,759 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2024-11-13 16:21:53,759 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 797 flow [2024-11-13 16:21:53,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:21:53,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:21:53,759 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:21:53,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:21:53,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 16:21:53,960 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:21:53,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:21:53,961 INFO L85 PathProgramCache]: Analyzing trace with hash -724315380, now seen corresponding path program 1 times [2024-11-13 16:21:53,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:21:53,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39474663] [2024-11-13 16:21:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:53,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:55,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:21:55,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39474663] [2024-11-13 16:21:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39474663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:21:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264575458] [2024-11-13 16:21:55,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:21:55,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:21:55,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:21:55,686 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:21:55,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:21:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:21:55,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 16:21:55,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:57,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:21:58,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:21:58,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2024-11-13 16:21:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:59,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264575458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:21:59,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:21:59,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-11-13 16:21:59,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857076210] [2024-11-13 16:21:59,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:21:59,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-13 16:21:59,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:21:59,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-13 16:21:59,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 16:22:00,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:22:00,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 797 flow. Second operand has 52 states, 52 states have (on average 8.615384615384615) internal successors, (448), 52 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:22:00,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:22:00,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:22:00,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:22:08,476 INFO L124 PetriNetUnfolderBase]: 2447/4579 cut-off events. [2024-11-13 16:22:08,476 INFO L125 PetriNetUnfolderBase]: For 21019/21019 co-relation queries the response was YES. [2024-11-13 16:22:08,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17942 conditions, 4579 events. 2447/4579 cut-off events. For 21019/21019 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 29369 event pairs, 323 based on Foata normal form. 3/4582 useless extension candidates. Maximal degree in co-relation 13715. Up to 2555 conditions per place. [2024-11-13 16:22:08,521 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 195 selfloop transitions, 190 changer transitions 10/397 dead transitions. [2024-11-13 16:22:08,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 397 transitions, 3778 flow [2024-11-13 16:22:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-13 16:22:08,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-13 16:22:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 589 transitions. [2024-11-13 16:22:08,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2887254901960784 [2024-11-13 16:22:08,526 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 797 flow. Second operand 51 states and 589 transitions. [2024-11-13 16:22:08,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 397 transitions, 3778 flow [2024-11-13 16:22:08,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 397 transitions, 3749 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 16:22:08,589 INFO L231 Difference]: Finished difference. Result has 145 places, 272 transitions, 3101 flow [2024-11-13 16:22:08,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3101, PETRI_PLACES=145, PETRI_TRANSITIONS=272} [2024-11-13 16:22:08,590 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 105 predicate places. [2024-11-13 16:22:08,590 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 272 transitions, 3101 flow [2024-11-13 16:22:08,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 8.615384615384615) internal successors, (448), 52 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:22:08,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:22:08,591 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:08,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 16:22:08,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:08,795 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:22:08,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:08,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1216319402, now seen corresponding path program 2 times [2024-11-13 16:22:08,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:08,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053180171] [2024-11-13 16:22:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:10,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:10,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053180171] [2024-11-13 16:22:10,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053180171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:10,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729917510] [2024-11-13 16:22:10,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:22:10,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:10,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:10,354 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:10,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:22:10,477 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:22:10,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:10,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 16:22:10,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:11,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:12,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:12,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-13 16:22:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:13,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729917510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:13,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:13,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 48 [2024-11-13 16:22:13,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423084443] [2024-11-13 16:22:13,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:13,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 16:22:13,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:13,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 16:22:13,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2146, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 16:22:14,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:22:14,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 272 transitions, 3101 flow. Second operand has 49 states, 49 states have (on average 8.693877551020408) internal successors, (426), 49 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:22:14,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:22:14,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:22:14,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:22:23,679 INFO L124 PetriNetUnfolderBase]: 2786/5263 cut-off events. [2024-11-13 16:22:23,679 INFO L125 PetriNetUnfolderBase]: For 37662/37662 co-relation queries the response was YES. [2024-11-13 16:22:23,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25914 conditions, 5263 events. 2786/5263 cut-off events. For 37662/37662 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 35365 event pairs, 237 based on Foata normal form. 5/5268 useless extension candidates. Maximal degree in co-relation 25841. Up to 2626 conditions per place. [2024-11-13 16:22:23,730 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 266 selfloop transitions, 302 changer transitions 29/599 dead transitions. [2024-11-13 16:22:23,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 599 transitions, 6802 flow [2024-11-13 16:22:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 16:22:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-13 16:22:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 689 transitions. [2024-11-13 16:22:23,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30758928571428573 [2024-11-13 16:22:23,733 INFO L175 Difference]: Start difference. First operand has 145 places, 272 transitions, 3101 flow. Second operand 56 states and 689 transitions. [2024-11-13 16:22:23,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 599 transitions, 6802 flow [2024-11-13 16:22:23,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 599 transitions, 6607 flow, removed 92 selfloop flow, removed 6 redundant places. [2024-11-13 16:22:24,058 INFO L231 Difference]: Finished difference. Result has 212 places, 413 transitions, 5515 flow [2024-11-13 16:22:24,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=5515, PETRI_PLACES=212, PETRI_TRANSITIONS=413} [2024-11-13 16:22:24,059 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 172 predicate places. [2024-11-13 16:22:24,060 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 413 transitions, 5515 flow [2024-11-13 16:22:24,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.693877551020408) internal successors, (426), 49 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:22:24,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:22:24,060 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:24,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:22:24,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:24,265 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:22:24,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:24,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1645059996, now seen corresponding path program 3 times [2024-11-13 16:22:24,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:24,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745073158] [2024-11-13 16:22:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:24,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:25,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:25,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745073158] [2024-11-13 16:22:25,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745073158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:25,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458420959] [2024-11-13 16:22:25,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:22:25,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:25,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:25,808 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:25,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:22:25,970 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 16:22:25,970 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:25,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 16:22:25,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:22:26,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:27,551 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:27,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-13 16:22:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:22:27,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458420959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:27,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:27,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 41 [2024-11-13 16:22:27,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802967217] [2024-11-13 16:22:27,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:27,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 16:22:27,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:27,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 16:22:27,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1590, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 16:22:28,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:22:28,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 413 transitions, 5515 flow. Second operand has 42 states, 42 states have (on average 8.904761904761905) internal successors, (374), 42 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:22:28,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:22:28,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:22:28,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:22:32,246 INFO L124 PetriNetUnfolderBase]: 2860/5396 cut-off events. [2024-11-13 16:22:32,246 INFO L125 PetriNetUnfolderBase]: For 58607/58607 co-relation queries the response was YES. [2024-11-13 16:22:32,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31805 conditions, 5396 events. 2860/5396 cut-off events. For 58607/58607 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 36259 event pairs, 269 based on Foata normal form. 2/5398 useless extension candidates. Maximal degree in co-relation 31714. Up to 3068 conditions per place. [2024-11-13 16:22:32,310 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 295 selfloop transitions, 300 changer transitions 5/602 dead transitions. [2024-11-13 16:22:32,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 602 transitions, 8407 flow [2024-11-13 16:22:32,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 16:22:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-13 16:22:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 415 transitions. [2024-11-13 16:22:32,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3143939393939394 [2024-11-13 16:22:32,314 INFO L175 Difference]: Start difference. First operand has 212 places, 413 transitions, 5515 flow. Second operand 33 states and 415 transitions. [2024-11-13 16:22:32,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 602 transitions, 8407 flow [2024-11-13 16:22:32,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 602 transitions, 7998 flow, removed 196 selfloop flow, removed 8 redundant places. [2024-11-13 16:22:32,664 INFO L231 Difference]: Finished difference. Result has 242 places, 490 transitions, 7232 flow [2024-11-13 16:22:32,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5170, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7232, PETRI_PLACES=242, PETRI_TRANSITIONS=490} [2024-11-13 16:22:32,665 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 202 predicate places. [2024-11-13 16:22:32,665 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 490 transitions, 7232 flow [2024-11-13 16:22:32,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 8.904761904761905) internal successors, (374), 42 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:22:32,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:22:32,666 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:32,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:22:32,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 16:22:32,870 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:22:32,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash -450695826, now seen corresponding path program 4 times [2024-11-13 16:22:32,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:32,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031264675] [2024-11-13 16:22:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:32,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:34,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:34,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031264675] [2024-11-13 16:22:34,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031264675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:34,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9952112] [2024-11-13 16:22:34,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:22:34,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:34,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:34,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:34,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:22:34,440 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:22:34,440 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:34,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 16:22:34,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:35,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:36,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:36,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-13 16:22:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:37,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9952112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:37,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:37,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 49 [2024-11-13 16:22:37,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495268881] [2024-11-13 16:22:37,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:37,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 16:22:37,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:37,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 16:22:37,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2225, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 16:22:37,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:22:37,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 490 transitions, 7232 flow. Second operand has 50 states, 50 states have (on average 8.66) internal successors, (433), 50 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:22:37,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:22:37,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:22:37,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:22:45,343 INFO L124 PetriNetUnfolderBase]: 2918/5565 cut-off events. [2024-11-13 16:22:45,344 INFO L125 PetriNetUnfolderBase]: For 75849/75849 co-relation queries the response was YES. [2024-11-13 16:22:45,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35802 conditions, 5565 events. 2918/5565 cut-off events. For 75849/75849 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 38234 event pairs, 246 based on Foata normal form. 3/5568 useless extension candidates. Maximal degree in co-relation 35711. Up to 2847 conditions per place. [2024-11-13 16:22:45,413 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 282 selfloop transitions, 382 changer transitions 10/676 dead transitions. [2024-11-13 16:22:45,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 676 transitions, 9916 flow [2024-11-13 16:22:45,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 16:22:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-13 16:22:45,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 604 transitions. [2024-11-13 16:22:45,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3145833333333333 [2024-11-13 16:22:45,416 INFO L175 Difference]: Start difference. First operand has 242 places, 490 transitions, 7232 flow. Second operand 48 states and 604 transitions. [2024-11-13 16:22:45,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 676 transitions, 9916 flow [2024-11-13 16:22:45,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 676 transitions, 9598 flow, removed 119 selfloop flow, removed 13 redundant places. [2024-11-13 16:22:45,980 INFO L231 Difference]: Finished difference. Result has 283 places, 515 transitions, 8494 flow [2024-11-13 16:22:45,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6978, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=8494, PETRI_PLACES=283, PETRI_TRANSITIONS=515} [2024-11-13 16:22:45,980 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 243 predicate places. [2024-11-13 16:22:45,981 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 515 transitions, 8494 flow [2024-11-13 16:22:45,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.66) internal successors, (433), 50 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:22:45,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:22:45,981 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:45,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 16:22:46,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 16:22:46,182 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:22:46,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:46,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1292540890, now seen corresponding path program 5 times [2024-11-13 16:22:46,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:46,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441573286] [2024-11-13 16:22:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:46,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:47,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:47,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441573286] [2024-11-13 16:22:47,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441573286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:47,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292866543] [2024-11-13 16:22:47,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:22:47,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:47,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:47,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:47,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:22:47,749 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 16:22:47,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:22:47,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 16:22:47,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:22:48,839 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-13 16:22:48,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2024-11-13 16:22:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:49,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:50,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:22:50,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-13 16:22:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:51,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292866543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:51,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:51,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 49 [2024-11-13 16:22:51,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256341331] [2024-11-13 16:22:51,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:51,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 16:22:51,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:51,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 16:22:51,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2248, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 16:22:51,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:22:51,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 515 transitions, 8494 flow. Second operand has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:22:51,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:22:51,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:22:51,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:22:59,674 INFO L124 PetriNetUnfolderBase]: 3009/5766 cut-off events. [2024-11-13 16:22:59,674 INFO L125 PetriNetUnfolderBase]: For 98909/98909 co-relation queries the response was YES. [2024-11-13 16:22:59,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40035 conditions, 5766 events. 3009/5766 cut-off events. For 98909/98909 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 40175 event pairs, 261 based on Foata normal form. 3/5769 useless extension candidates. Maximal degree in co-relation 39932. Up to 2959 conditions per place. [2024-11-13 16:22:59,733 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 274 selfloop transitions, 420 changer transitions 10/706 dead transitions. [2024-11-13 16:22:59,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 706 transitions, 11439 flow [2024-11-13 16:22:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-13 16:22:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-13 16:22:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 560 transitions. [2024-11-13 16:22:59,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3111111111111111 [2024-11-13 16:22:59,735 INFO L175 Difference]: Start difference. First operand has 283 places, 515 transitions, 8494 flow. Second operand 45 states and 560 transitions. [2024-11-13 16:22:59,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 706 transitions, 11439 flow [2024-11-13 16:23:00,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 706 transitions, 10942 flow, removed 66 selfloop flow, removed 28 redundant places. [2024-11-13 16:23:00,127 INFO L231 Difference]: Finished difference. Result has 307 places, 555 transitions, 10093 flow [2024-11-13 16:23:00,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8016, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=10093, PETRI_PLACES=307, PETRI_TRANSITIONS=555} [2024-11-13 16:23:00,128 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 267 predicate places. [2024-11-13 16:23:00,128 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 555 transitions, 10093 flow [2024-11-13 16:23:00,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:23:00,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:23:00,128 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:00,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 16:23:00,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 16:23:00,329 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:23:00,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:00,329 INFO L85 PathProgramCache]: Analyzing trace with hash 886913946, now seen corresponding path program 6 times [2024-11-13 16:23:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:00,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046876095] [2024-11-13 16:23:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:00,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:01,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:23:01,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046876095] [2024-11-13 16:23:01,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046876095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:01,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148940753] [2024-11-13 16:23:01,930 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:23:01,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:01,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:01,933 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:01,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:23:02,292 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 16:23:02,292 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:23:02,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 16:23:02,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:03,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-13 16:23:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:03,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:04,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:23:04,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-11-13 16:23:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:05,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148940753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:05,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:05,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 49 [2024-11-13 16:23:05,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191491650] [2024-11-13 16:23:05,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:05,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 16:23:05,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:05,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 16:23:05,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2207, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 16:23:05,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:23:05,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 555 transitions, 10093 flow. Second operand has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:23:05,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:23:05,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:23:05,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:23:20,433 INFO L124 PetriNetUnfolderBase]: 3562/6918 cut-off events. [2024-11-13 16:23:20,433 INFO L125 PetriNetUnfolderBase]: For 151739/151739 co-relation queries the response was YES. [2024-11-13 16:23:20,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52895 conditions, 6918 events. 3562/6918 cut-off events. For 151739/151739 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 50733 event pairs, 288 based on Foata normal form. 9/6927 useless extension candidates. Maximal degree in co-relation 52749. Up to 2759 conditions per place. [2024-11-13 16:23:20,518 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 453 selfloop transitions, 517 changer transitions 33/1005 dead transitions. [2024-11-13 16:23:20,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 1005 transitions, 17909 flow [2024-11-13 16:23:20,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-13 16:23:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2024-11-13 16:23:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 984 transitions. [2024-11-13 16:23:20,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3075 [2024-11-13 16:23:20,523 INFO L175 Difference]: Start difference. First operand has 307 places, 555 transitions, 10093 flow. Second operand 80 states and 984 transitions. [2024-11-13 16:23:20,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 1005 transitions, 17909 flow [2024-11-13 16:23:21,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 1005 transitions, 17595 flow, removed 79 selfloop flow, removed 21 redundant places. [2024-11-13 16:23:21,234 INFO L231 Difference]: Finished difference. Result has 394 places, 748 transitions, 15243 flow [2024-11-13 16:23:21,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9804, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=15243, PETRI_PLACES=394, PETRI_TRANSITIONS=748} [2024-11-13 16:23:21,235 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 354 predicate places. [2024-11-13 16:23:21,236 INFO L471 AbstractCegarLoop]: Abstraction has has 394 places, 748 transitions, 15243 flow [2024-11-13 16:23:21,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:23:21,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:23:21,236 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:21,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 16:23:21,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 16:23:21,437 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:23:21,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:21,437 INFO L85 PathProgramCache]: Analyzing trace with hash 47405914, now seen corresponding path program 7 times [2024-11-13 16:23:21,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:21,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138677834] [2024-11-13 16:23:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:21,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:23:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138677834] [2024-11-13 16:23:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138677834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123506235] [2024-11-13 16:23:22,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:23:22,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:22,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:22,627 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:22,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:23:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:22,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 16:23:22,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:23,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:24,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:23:24,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2024-11-13 16:23:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:25,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123506235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:25,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:25,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 48 [2024-11-13 16:23:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191435009] [2024-11-13 16:23:25,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:25,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 16:23:25,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:25,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 16:23:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2120, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 16:23:25,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:23:25,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 748 transitions, 15243 flow. Second operand has 49 states, 49 states have (on average 8.714285714285714) internal successors, (427), 49 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:23:25,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:23:25,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:23:25,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:23:29,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:23:33,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:23:37,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:23:45,980 INFO L124 PetriNetUnfolderBase]: 3561/6913 cut-off events. [2024-11-13 16:23:45,980 INFO L125 PetriNetUnfolderBase]: For 216394/216394 co-relation queries the response was YES. [2024-11-13 16:23:46,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59975 conditions, 6913 events. 3561/6913 cut-off events. For 216394/216394 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 50806 event pairs, 266 based on Foata normal form. 4/6917 useless extension candidates. Maximal degree in co-relation 59786. Up to 3618 conditions per place. [2024-11-13 16:23:46,096 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 376 selfloop transitions, 524 changer transitions 31/933 dead transitions. [2024-11-13 16:23:46,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 933 transitions, 18637 flow [2024-11-13 16:23:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 16:23:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-13 16:23:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 685 transitions. [2024-11-13 16:23:46,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30580357142857145 [2024-11-13 16:23:46,099 INFO L175 Difference]: Start difference. First operand has 394 places, 748 transitions, 15243 flow. Second operand 56 states and 685 transitions. [2024-11-13 16:23:46,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 933 transitions, 18637 flow [2024-11-13 16:23:47,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 933 transitions, 17784 flow, removed 352 selfloop flow, removed 26 redundant places. [2024-11-13 16:23:47,594 INFO L231 Difference]: Finished difference. Result has 424 places, 753 transitions, 16170 flow [2024-11-13 16:23:47,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14471, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=511, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=16170, PETRI_PLACES=424, PETRI_TRANSITIONS=753} [2024-11-13 16:23:47,595 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 384 predicate places. [2024-11-13 16:23:47,595 INFO L471 AbstractCegarLoop]: Abstraction has has 424 places, 753 transitions, 16170 flow [2024-11-13 16:23:47,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.714285714285714) internal successors, (427), 49 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:23:47,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:23:47,596 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:47,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 16:23:47,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 16:23:47,797 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:23:47,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:47,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1239785678, now seen corresponding path program 8 times [2024-11-13 16:23:47,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:23:47,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758258066] [2024-11-13 16:23:47,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:47,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:23:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:49,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:23:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758258066] [2024-11-13 16:23:49,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758258066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:23:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434017143] [2024-11-13 16:23:49,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:23:49,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:49,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:49,253 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:49,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:23:49,362 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:23:49,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:23:49,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 16:23:49,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:50,488 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-13 16:23:50,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2024-11-13 16:23:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:50,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:51,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:23:51,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-13 16:23:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:23:52,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434017143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:23:52,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:23:52,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 49 [2024-11-13 16:23:52,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47227037] [2024-11-13 16:23:52,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:23:52,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 16:23:52,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:23:52,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 16:23:52,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2242, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 16:23:53,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:23:53,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 753 transitions, 16170 flow. Second operand has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:23:53,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:23:53,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:23:53,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:03,930 INFO L124 PetriNetUnfolderBase]: 3583/6963 cut-off events. [2024-11-13 16:24:03,931 INFO L125 PetriNetUnfolderBase]: For 259678/259678 co-relation queries the response was YES. [2024-11-13 16:24:04,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63603 conditions, 6963 events. 3583/6963 cut-off events. For 259678/259678 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 51345 event pairs, 264 based on Foata normal form. 3/6966 useless extension candidates. Maximal degree in co-relation 63412. Up to 3708 conditions per place. [2024-11-13 16:24:04,074 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 405 selfloop transitions, 522 changer transitions 10/939 dead transitions. [2024-11-13 16:24:04,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 939 transitions, 19785 flow [2024-11-13 16:24:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 16:24:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-13 16:24:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 587 transitions. [2024-11-13 16:24:04,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30572916666666666 [2024-11-13 16:24:04,076 INFO L175 Difference]: Start difference. First operand has 424 places, 753 transitions, 16170 flow. Second operand 48 states and 587 transitions. [2024-11-13 16:24:04,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 939 transitions, 19785 flow [2024-11-13 16:24:05,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 939 transitions, 19264 flow, removed 41 selfloop flow, removed 42 redundant places. [2024-11-13 16:24:05,719 INFO L231 Difference]: Finished difference. Result has 427 places, 783 transitions, 17961 flow [2024-11-13 16:24:05,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15674, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=17961, PETRI_PLACES=427, PETRI_TRANSITIONS=783} [2024-11-13 16:24:05,720 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 387 predicate places. [2024-11-13 16:24:05,720 INFO L471 AbstractCegarLoop]: Abstraction has has 427 places, 783 transitions, 17961 flow [2024-11-13 16:24:05,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:05,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:05,721 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:05,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 16:24:05,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 16:24:05,921 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:24:05,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:05,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1575125158, now seen corresponding path program 9 times [2024-11-13 16:24:05,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:05,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864965413] [2024-11-13 16:24:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:05,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:07,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:07,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864965413] [2024-11-13 16:24:07,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864965413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:07,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200150658] [2024-11-13 16:24:07,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:24:07,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:07,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:07,559 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:07,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 16:24:07,741 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 16:24:07,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:07,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 16:24:07,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:24:08,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:09,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:09,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2024-11-13 16:24:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:24:09,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200150658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:09,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:09,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 12] total 40 [2024-11-13 16:24:09,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698656488] [2024-11-13 16:24:09,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:09,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 16:24:09,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:09,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 16:24:09,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1503, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 16:24:09,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:24:09,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 783 transitions, 17961 flow. Second operand has 41 states, 41 states have (on average 8.951219512195122) internal successors, (367), 41 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:09,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:09,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:24:09,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:15,313 INFO L124 PetriNetUnfolderBase]: 3702/7258 cut-off events. [2024-11-13 16:24:15,313 INFO L125 PetriNetUnfolderBase]: For 320815/320815 co-relation queries the response was YES. [2024-11-13 16:24:15,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70105 conditions, 7258 events. 3702/7258 cut-off events. For 320815/320815 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 54693 event pairs, 327 based on Foata normal form. 4/7262 useless extension candidates. Maximal degree in co-relation 69929. Up to 4157 conditions per place. [2024-11-13 16:24:15,433 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 496 selfloop transitions, 436 changer transitions 14/948 dead transitions. [2024-11-13 16:24:15,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 948 transitions, 22122 flow [2024-11-13 16:24:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 16:24:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-13 16:24:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 418 transitions. [2024-11-13 16:24:15,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-11-13 16:24:15,435 INFO L175 Difference]: Start difference. First operand has 427 places, 783 transitions, 17961 flow. Second operand 33 states and 418 transitions. [2024-11-13 16:24:15,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 948 transitions, 22122 flow [2024-11-13 16:24:16,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 948 transitions, 21577 flow, removed 80 selfloop flow, removed 25 redundant places. [2024-11-13 16:24:17,015 INFO L231 Difference]: Finished difference. Result has 439 places, 817 transitions, 19928 flow [2024-11-13 16:24:17,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17423, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=404, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=19928, PETRI_PLACES=439, PETRI_TRANSITIONS=817} [2024-11-13 16:24:17,016 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 399 predicate places. [2024-11-13 16:24:17,016 INFO L471 AbstractCegarLoop]: Abstraction has has 439 places, 817 transitions, 19928 flow [2024-11-13 16:24:17,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 8.951219512195122) internal successors, (367), 41 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:17,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:17,017 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:17,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 16:24:17,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:17,217 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:24:17,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -948245578, now seen corresponding path program 10 times [2024-11-13 16:24:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:17,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417531480] [2024-11-13 16:24:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:17,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:18,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:18,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417531480] [2024-11-13 16:24:18,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417531480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:18,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476284703] [2024-11-13 16:24:18,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:24:18,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:18,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:18,398 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:18,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 16:24:18,523 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:24:18,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:18,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 16:24:18,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:19,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:20,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:20,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-13 16:24:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:21,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476284703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:21,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:21,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 48 [2024-11-13 16:24:21,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393499078] [2024-11-13 16:24:21,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:21,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 16:24:21,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 16:24:21,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2118, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 16:24:21,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:24:21,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 817 transitions, 19928 flow. Second operand has 49 states, 49 states have (on average 8.693877551020408) internal successors, (426), 49 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:21,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:21,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:24:21,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:32,393 INFO L124 PetriNetUnfolderBase]: 3736/7382 cut-off events. [2024-11-13 16:24:32,393 INFO L125 PetriNetUnfolderBase]: For 372875/372875 co-relation queries the response was YES. [2024-11-13 16:24:32,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74735 conditions, 7382 events. 3736/7382 cut-off events. For 372875/372875 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 56365 event pairs, 306 based on Foata normal form. 4/7386 useless extension candidates. Maximal degree in co-relation 74564. Up to 4037 conditions per place. [2024-11-13 16:24:32,534 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 470 selfloop transitions, 525 changer transitions 24/1021 dead transitions. [2024-11-13 16:24:32,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1021 transitions, 24533 flow [2024-11-13 16:24:32,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 16:24:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-13 16:24:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 653 transitions. [2024-11-13 16:24:32,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3080188679245283 [2024-11-13 16:24:32,537 INFO L175 Difference]: Start difference. First operand has 439 places, 817 transitions, 19928 flow. Second operand 53 states and 653 transitions. [2024-11-13 16:24:32,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1021 transitions, 24533 flow [2024-11-13 16:24:34,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1021 transitions, 24121 flow, removed 88 selfloop flow, removed 24 redundant places. [2024-11-13 16:24:34,636 INFO L231 Difference]: Finished difference. Result has 477 places, 855 transitions, 22357 flow [2024-11-13 16:24:34,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19593, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=489, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=22357, PETRI_PLACES=477, PETRI_TRANSITIONS=855} [2024-11-13 16:24:34,637 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 437 predicate places. [2024-11-13 16:24:34,637 INFO L471 AbstractCegarLoop]: Abstraction has has 477 places, 855 transitions, 22357 flow [2024-11-13 16:24:34,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.693877551020408) internal successors, (426), 49 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:34,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:34,637 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:34,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 16:24:34,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:34,838 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:24:34,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:34,839 INFO L85 PathProgramCache]: Analyzing trace with hash 383476834, now seen corresponding path program 11 times [2024-11-13 16:24:34,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:34,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820397942] [2024-11-13 16:24:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:34,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:36,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:36,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820397942] [2024-11-13 16:24:36,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820397942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:36,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255200334] [2024-11-13 16:24:36,226 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:24:36,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:36,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:36,229 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:36,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 16:24:36,392 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 16:24:36,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:36,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 16:24:36,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:24:37,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:38,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:38,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2024-11-13 16:24:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:24:38,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255200334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:38,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:38,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 12] total 41 [2024-11-13 16:24:38,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169997871] [2024-11-13 16:24:38,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:38,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 16:24:38,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:38,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 16:24:38,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1579, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 16:24:38,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:24:38,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 855 transitions, 22357 flow. Second operand has 42 states, 42 states have (on average 8.904761904761905) internal successors, (374), 42 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:38,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:38,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:24:38,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:45,927 INFO L124 PetriNetUnfolderBase]: 3842/7582 cut-off events. [2024-11-13 16:24:45,927 INFO L125 PetriNetUnfolderBase]: For 445584/445584 co-relation queries the response was YES. [2024-11-13 16:24:46,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81312 conditions, 7582 events. 3842/7582 cut-off events. For 445584/445584 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 58159 event pairs, 347 based on Foata normal form. 4/7586 useless extension candidates. Maximal degree in co-relation 81093. Up to 3282 conditions per place. [2024-11-13 16:24:46,044 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 545 selfloop transitions, 446 changer transitions 5/998 dead transitions. [2024-11-13 16:24:46,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 998 transitions, 26229 flow [2024-11-13 16:24:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 16:24:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-13 16:24:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 424 transitions. [2024-11-13 16:24:46,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2024-11-13 16:24:46,046 INFO L175 Difference]: Start difference. First operand has 477 places, 855 transitions, 22357 flow. Second operand 33 states and 424 transitions. [2024-11-13 16:24:46,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 998 transitions, 26229 flow [2024-11-13 16:24:48,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 998 transitions, 25788 flow, removed 100 selfloop flow, removed 29 redundant places. [2024-11-13 16:24:48,369 INFO L231 Difference]: Finished difference. Result has 484 places, 877 transitions, 24106 flow [2024-11-13 16:24:48,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=21930, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=424, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=24106, PETRI_PLACES=484, PETRI_TRANSITIONS=877} [2024-11-13 16:24:48,371 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 444 predicate places. [2024-11-13 16:24:48,372 INFO L471 AbstractCegarLoop]: Abstraction has has 484 places, 877 transitions, 24106 flow [2024-11-13 16:24:48,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 8.904761904761905) internal successors, (374), 42 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:48,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:48,372 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:48,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 16:24:48,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:48,573 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:24:48,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:48,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1237047050, now seen corresponding path program 12 times [2024-11-13 16:24:48,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:48,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53421157] [2024-11-13 16:24:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:48,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:49,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:49,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53421157] [2024-11-13 16:24:49,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53421157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:49,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128829785] [2024-11-13 16:24:49,911 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:24:49,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:49,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:49,913 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:49,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 16:24:50,129 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 16:24:50,130 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:50,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 16:24:50,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:50,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-13 16:24:51,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:51,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:53,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:24:53,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2024-11-13 16:24:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:54,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128829785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:54,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:54,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 49 [2024-11-13 16:24:54,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522920689] [2024-11-13 16:24:54,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:54,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 16:24:54,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 16:24:54,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=2224, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 16:24:54,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:24:54,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 877 transitions, 24106 flow. Second operand has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:54,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:54,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:24:54,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:25:05,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:25:10,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.85s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:25:12,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:25:17,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:25:20,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 16:25:43,682 INFO L124 PetriNetUnfolderBase]: 5304/10300 cut-off events. [2024-11-13 16:25:43,682 INFO L125 PetriNetUnfolderBase]: For 704315/704315 co-relation queries the response was YES. [2024-11-13 16:25:43,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117301 conditions, 10300 events. 5304/10300 cut-off events. For 704315/704315 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 79374 event pairs, 351 based on Foata normal form. 10/10310 useless extension candidates. Maximal degree in co-relation 117070. Up to 4138 conditions per place. [2024-11-13 16:25:43,892 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 651 selfloop transitions, 806 changer transitions 63/1522 dead transitions. [2024-11-13 16:25:43,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 1522 transitions, 40895 flow [2024-11-13 16:25:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-13 16:25:43,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2024-11-13 16:25:43,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 1288 transitions. [2024-11-13 16:25:43,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.312621359223301 [2024-11-13 16:25:43,895 INFO L175 Difference]: Start difference. First operand has 484 places, 877 transitions, 24106 flow. Second operand 103 states and 1288 transitions. [2024-11-13 16:25:43,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 1522 transitions, 40895 flow [2024-11-13 16:25:47,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 1522 transitions, 40595 flow, removed 69 selfloop flow, removed 23 redundant places. [2024-11-13 16:25:47,795 INFO L231 Difference]: Finished difference. Result has 593 places, 1203 transitions, 37311 flow [2024-11-13 16:25:47,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=23887, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=37311, PETRI_PLACES=593, PETRI_TRANSITIONS=1203} [2024-11-13 16:25:47,796 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 553 predicate places. [2024-11-13 16:25:47,796 INFO L471 AbstractCegarLoop]: Abstraction has has 593 places, 1203 transitions, 37311 flow [2024-11-13 16:25:47,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:25:47,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:25:47,797 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:25:47,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 16:25:47,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 16:25:47,997 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:25:47,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:25:47,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1207350756, now seen corresponding path program 13 times [2024-11-13 16:25:47,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:25:47,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481317874] [2024-11-13 16:25:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:47,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:25:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:25:49,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:25:49,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481317874] [2024-11-13 16:25:49,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481317874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:49,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055985186] [2024-11-13 16:25:49,291 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:25:49,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:49,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:25:49,294 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:25:49,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 16:25:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:49,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 16:25:49,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:25:50,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-13 16:25:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:25:50,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:51,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:25:51,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2024-11-13 16:25:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:25:52,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055985186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:25:52,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:25:52,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 49 [2024-11-13 16:25:52,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573112582] [2024-11-13 16:25:52,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:25:52,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 16:25:52,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:25:52,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 16:25:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=2165, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 16:25:53,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:25:53,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 1203 transitions, 37311 flow. Second operand has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:25:53,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:25:53,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:25:53,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:26:28,250 INFO L124 PetriNetUnfolderBase]: 8361/15889 cut-off events. [2024-11-13 16:26:28,251 INFO L125 PetriNetUnfolderBase]: For 1471771/1471771 co-relation queries the response was YES. [2024-11-13 16:26:28,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208191 conditions, 15889 events. 8361/15889 cut-off events. For 1471771/1471771 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 128274 event pairs, 477 based on Foata normal form. 42/15931 useless extension candidates. Maximal degree in co-relation 207924. Up to 6355 conditions per place. [2024-11-13 16:26:28,731 INFO L140 encePairwiseOnDemand]: 23/40 looper letters, 920 selfloop transitions, 1490 changer transitions 114/2526 dead transitions. [2024-11-13 16:26:28,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 2526 transitions, 78125 flow [2024-11-13 16:26:28,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2024-11-13 16:26:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2024-11-13 16:26:28,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 1944 transitions. [2024-11-13 16:26:28,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32837837837837835 [2024-11-13 16:26:28,736 INFO L175 Difference]: Start difference. First operand has 593 places, 1203 transitions, 37311 flow. Second operand 148 states and 1944 transitions. [2024-11-13 16:26:28,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 730 places, 2526 transitions, 78125 flow [2024-11-13 16:26:45,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 2526 transitions, 75245 flow, removed 1344 selfloop flow, removed 25 redundant places. [2024-11-13 16:26:45,748 INFO L231 Difference]: Finished difference. Result has 765 places, 2093 transitions, 70358 flow [2024-11-13 16:26:45,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=35313, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=736, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=148, PETRI_FLOW=70358, PETRI_PLACES=765, PETRI_TRANSITIONS=2093} [2024-11-13 16:26:45,750 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 725 predicate places. [2024-11-13 16:26:45,750 INFO L471 AbstractCegarLoop]: Abstraction has has 765 places, 2093 transitions, 70358 flow [2024-11-13 16:26:45,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:26:45,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:26:45,751 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:26:45,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-13 16:26:45,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 16:26:45,955 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:26:45,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:26:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1328954326, now seen corresponding path program 14 times [2024-11-13 16:26:45,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:26:45,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796218875] [2024-11-13 16:26:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:26:45,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:26:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:26:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:26:47,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:26:47,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796218875] [2024-11-13 16:26:47,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796218875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:26:47,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467975121] [2024-11-13 16:26:47,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:26:47,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:26:47,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:26:47,233 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:26:47,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 16:26:47,401 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:26:47,401 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:26:47,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 16:26:47,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:26:48,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2024-11-13 16:26:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:26:48,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:26:49,909 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:26:49,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-13 16:26:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:26:50,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467975121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:26:50,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:26:50,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-11-13 16:26:50,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322324909] [2024-11-13 16:26:50,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:26:50,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-13 16:26:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:26:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-13 16:26:50,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 16:26:51,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:26:51,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 765 places, 2093 transitions, 70358 flow. Second operand has 51 states, 51 states have (on average 8.647058823529411) internal successors, (441), 51 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:26:51,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:26:51,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:26:51,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:27:41,914 INFO L124 PetriNetUnfolderBase]: 11543/22410 cut-off events. [2024-11-13 16:27:41,914 INFO L125 PetriNetUnfolderBase]: For 2375860/2375860 co-relation queries the response was YES. [2024-11-13 16:27:42,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311161 conditions, 22410 events. 11543/22410 cut-off events. For 2375860/2375860 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 198374 event pairs, 671 based on Foata normal form. 10/22420 useless extension candidates. Maximal degree in co-relation 310907. Up to 8329 conditions per place. [2024-11-13 16:27:43,174 INFO L140 encePairwiseOnDemand]: 23/40 looper letters, 1433 selfloop transitions, 1984 changer transitions 89/3508 dead transitions. [2024-11-13 16:27:43,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 852 places, 3508 transitions, 126501 flow [2024-11-13 16:27:43,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-13 16:27:43,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2024-11-13 16:27:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1248 transitions. [2024-11-13 16:27:43,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-11-13 16:27:43,178 INFO L175 Difference]: Start difference. First operand has 765 places, 2093 transitions, 70358 flow. Second operand 99 states and 1248 transitions. [2024-11-13 16:27:43,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 852 places, 3508 transitions, 126501 flow [2024-11-13 16:28:47,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 3508 transitions, 116008 flow, removed 5146 selfloop flow, removed 23 redundant places. [2024-11-13 16:28:47,792 INFO L231 Difference]: Finished difference. Result has 876 places, 2980 transitions, 107840 flow [2024-11-13 16:28:47,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=64944, PETRI_DIFFERENCE_MINUEND_PLACES=731, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2093, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=764, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=107840, PETRI_PLACES=876, PETRI_TRANSITIONS=2980} [2024-11-13 16:28:47,795 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 836 predicate places. [2024-11-13 16:28:47,795 INFO L471 AbstractCegarLoop]: Abstraction has has 876 places, 2980 transitions, 107840 flow [2024-11-13 16:28:47,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 8.647058823529411) internal successors, (441), 51 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:28:47,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:28:47,796 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:28:47,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 16:28:48,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:28:48,000 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-13 16:28:48,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:28:48,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1345793818, now seen corresponding path program 15 times [2024-11-13 16:28:48,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:28:48,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056503928] [2024-11-13 16:28:48,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:28:48,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:28:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:28:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:28:49,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:28:49,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056503928] [2024-11-13 16:28:49,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056503928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:28:49,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369657157] [2024-11-13 16:28:49,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:28:49,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:28:49,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:28:49,357 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:28:49,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd856279-6cd6-4e80-ac1d-5339c69775f4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 16:28:49,474 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 16:28:49,474 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:28:49,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 16:28:49,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:28:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:28:50,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:28:51,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:28:51,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-11-13 16:28:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:28:51,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369657157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:28:51,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:28:51,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 12] total 41 [2024-11-13 16:28:51,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915991761] [2024-11-13 16:28:51,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:28:51,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 16:28:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:28:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 16:28:51,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1569, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 16:28:52,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-13 16:28:52,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 2980 transitions, 107840 flow. Second operand has 42 states, 42 states have (on average 8.904761904761905) internal successors, (374), 42 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:28:52,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:28:52,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-13 16:28:52,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand